Outcome history

One outcome's chance through time, live or settled: the last trade's price in each hour or day.

• Parameter market (string, required): A Kalshi ticker or Polymarket condition id: an outcome's market or a settled row's id.
• Parameter interval (string): hour or day.
• Parameter from (string): First day, YYYY-MM-DD.
• Parameter to (string): Last day, YYYY-MM-DD.
• market, outcome, interval (string): As asked, and the outcome's label.
• points[] (array): at (UTC) and chance.
• GET /probabilities/markets/{market}/history: Outcome history. One outcome's chance through time, live or settled: the last trade's price in each hour or day.

Updated 2026-11-06 11:42 UTC